Edgar Filing: PERELMAN RONALD O

Ownership Submission

FORM 4

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person ^*

MacAndrews & Forbes Holdings Inc.

2. Issuer Name and Ticker or Trading Symbol
SIGA TECHNOLOGIES INC [SIGA]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

_____ Director	__X__ 10% Owner
_____ Officer (give title below)	_____ Other (specify below)

(Last)

(First)

(Middle)

35 EAST 62ND STREET,

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2009

(Street)

NEW YORK, NY 10065

4. If Amendment, Date Original Filed(Month/Day/Year)

6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person

(City)

(State)

(Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1.Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock, par value $.0001 per share	09/30/2009		X		1,824,412	A	$ 1.9	4,296,634	I	Owned through partially-owned corporation ⁽¹⁾
Common Stock, par value $.0001 per share	09/30/2009		F		444,665	D	$ 7.8	3,851,969	I	Owned through partially-owned corporation ⁽¹⁾
Common Stock, par value $.0001 per share	09/30/2009		P		3,851,969 ⁽²⁾	A	$ 6.24	3,851,969	I	Owned through partially-owned limited partnership
Common Stock, par value $.0001 per share								5,962,032	I	Owned through wholly-owned corporation

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security
(Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code
(Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date
(Month/Day/Year)

7. Title and Amount of Underlying Securities
(Instr. 3 and 4)

8. Price of Derivative Security
(Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)

11. Nature of Indirect Beneficial Ownership
(Instr. 4)

Code

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Warrant (Right to Buy)

$ 1.9

09/30/2009

1,824,412

01/08/2004

01/08/2011

Common Stock

1,824,412

$ 0

Owned through partially-owned corporation ⁽¹⁾

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
MacAndrews & Forbes Holdings Inc. 35 EAST 62ND STREET NEW YORK, NY 10065		X
PERELMAN RONALD O 35 EAST 62ND STREET NEW YORK, NY 10065		X
MacAndrews & Forbes LLC 35 EAST 62ND STREET NEW YORK, NY 10065		X
STH Partners, L.P. C/O MATTHEW H. KAMENS, COZEN O'CONNOR 1900 MARKET STREET PHILADELPHIA, PA 19103		X

Signatures

/s/ Barry F. Schwartz, Executive Vice Chairman		10/02/2009
^**Signature of Reporting Person		Date
/s/ Barry F. Schwartz for Ronald O. Perelman pursuant to a Power of Attorney filed with the Securities and Exchange Commission		10/02/2009
^**Signature of Reporting Person		Date
/s/ Barry F. Schwartz, Executive Vice Chairman		10/02/2009
^**Signature of Reporting Person		Date
/s/ Paul G. Savas, Executive Vice President		10/02/2009
^**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Represents securities held by TransTech Pharma, Inc. ("TTP"), a corporation in which Ronald O. Perelman, a joint filer hereunder, has a direct ownership interest. Mr. Perelman disclaims beneficial ownership of the securities reported on the Form 4 as owned by TTP, except to the extent of his pecuniary interest therein. None of MacAndrews & Forbes Holdings Inc., MacAndrews & Forbes LLC or STH Partners, L.P., a limited partnership in which MacAndrews & Forbes LLC has a direct ownership interest and a joint filer hereunder ("STH"), has any pecuniary interest in securities held by TTP.
(2)	On September 30, 2009, STH acquired 3,851,969 shares of Common Stock in a privately negotiated purchase from TTP.
Remarks: Ronald O. Perelman beneficially owns 100% of the common stock of MacAndrews & Forbes Holdings Inc., which beneficially owns 100% of the equity interests of MacAndrews & Forbes LLC, a joint filer hereunder. MacAndrews & Forbes LLC has a direct ownership interest in STH. MacAndrews & Forbes LLC beneficially owns the securities described above as owned through wholly-owned corporation and STH beneficially owns the securities described above as owned through partially-owned limited partnership. STH has agreed that any voting stock of SIGA Technologies, Inc. ("SIGA") held by STH will be voted in the same proportion as the votes cast by the other holders of voting stock of SIGA on any matter to be voted on by holders of such voting stock.

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